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using System;
using System.Diagnostics;
using System.IO;
namespace Org.BouncyCastle.Utilities.IO
{
public class TeeInputStream
: BaseInputStream
{
private readonly Stream input, tee;
public TeeInputStream(Stream input, Stream tee)
{
Debug.Assert(input.CanRead);
Debug.Assert(tee.CanWrite);
this.input = input;
this.tee = tee;
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
Platform.Dispose(input);
Platform.Dispose(tee);
}
base.Dispose(disposing);
}
public override int Read(byte[] buffer, int offset, int count)
{
int i = input.Read(buffer, offset, count);
if (i > 0)
{
tee.Write(buffer, offset, i);
}
return i;
}
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER
public override int Read(Span<byte> buffer)
{
int i = input.Read(buffer);
if (i > 0)
{
tee.Write(buffer[..i]);
}
return i;
}
#endif
public override int ReadByte()
{
int i = input.ReadByte();
if (i >= 0)
{
tee.WriteByte((byte)i);
}
return i;
}
}
}
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